[1]LI Shoulei,YANG Changgang,LI Fu,et al.Effects of Whole Maize Straw Mulching Amounts on Soil Water Use of Winter Wheat in Dry Land[J].Research of Soil and Water Conservation,2016,23(06):122-127.
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Effects of Whole Maize Straw Mulching Amounts on Soil Water Use of Winter Wheat in Dry Land
Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
23
Number of periods:
2016 06
Page number:
122-127
Column:
Public date:
2016-12-28
- Title:
- Effects of Whole Maize Straw Mulching Amounts on Soil Water Use of Winter Wheat in Dry Land
- CLC:
- S512.1+1;S152.7
- DOI:
- -
- Abstract:
- In order to determine the appropriate mulching straw amounts of whole maize straw mulching in a semiarid rainfed area of the Loess Plateau, Northwest China, we studied the effects of four different mulching modes(T1:6 750 kg/hm2, T2:9 000 kg/hm2, T3:11 250 kg/hm2, T4:13 500 kg/hm2) on the soil moisture and winter wheat yield in dryland with the comparison of no muching (CK). The results show that, compared with CK, the wheat yield was increased by 12.1%~23.3% and the water use efficiency was increased by 13.4%~26.8%. The production and number of spike were significantly positive correlated (r=0.937), compared with CK, the mulching whole maize straw can significantly improve the number of spike(in addition to T3), and the number of spike of T2 was highest. In the four mulching modes, the average soil water storage in 0-200 cm layer was significantly higher than that of CK in the whole stages with an increase of 0.7%~1.0%, and the soil moisture condition of T1 was the best. The soil moisture in 0-200 cm layer was obviously improved before filling stage, but the soil moisture in 0-90 cm layer was generally lower from start of filling stage. Among the four mulching modes, the soil moisture of T2 in 0-60 cm layer was the highest in the whole growth period, and the improvement of the production and water use efficiency of T2 was also the most significant.
- References:
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